Slovakia

AP Photo/Peter Dejong

Peter Sagan of Slovakia, wearing the overall leader’s yellow jersey, (far left), rides in the pack during the fourth stage of the Tour de France cycling race over 237.5 kilometers (147.3 miles) with start in Saumur and finish in Limoges, France, on Tuesday

a church silhouetted below a belt of the Milky Way at the Hungarian-Slovakian border village Gemersky Jablonec, or Gomoralmagy in Hungarian, in southern Slovakia, 29 June 2016.  EPA/PETER KOMKA HUNGARY OUT

Peter Kompka/EPA

The Milky Way in the night sky, at the Hungarian-Slovakian border, near the village of Gemersky Jablonec, or Gomoralmagy in Hungarian.

Nuns pray during an early morning Rorate mass in Frnaciscan church in Bratislava on December 17, 2015.   Rorate Mass which is traditionally celebrated in Advent, in honour of Holy Mary, in the dark of the morning before sunrise, by candlelight.

Vladimir Simicek/AFP

Nuns pray during an early morning Rorate mass in Frnaciscan church in Bratislava on Thursday. Rorate Mass which is traditionally celebrated in Advent, in honour of Holy Mary, in the dark of the morning before sunrise, by candlelight

A long time exposed picture taken by night shows the Solar observatory at the peak of the Lomnicky Stit, in the Slovakia's High Tatras mountains, on September 04, 2014. The coronal station at Lomnicky Stit observatory, built at 2 632 meters between 1957 and 1962, ranks among five existing stations worldwide which systematically observe emission spectral lines of the corona.

Joe Klamar/AFP

The solar observatory on Lomnicky Stit, in Slovakia’s High Tatras range, on Thursday. The station is one of five worldwide which observe emission spectral lines in the sun’s corona.

Williams of the U.S. serves to Cibulkova of Slovakia during their women's singles match at the Brisbane International tennis tournament in Brisbane...Serena Williams of the U.S. serves to Dominika Cibulkova of Slovakia during their women's singles match at the Brisbane International tennis tournament in Brisbane, January 2, 2014. REUTERS/Jason Reed

Jason Reed/Reuters

Serena Williams of the US serves to Dominika Cibulková of Slovakia during their women’s singles match at the Brisbane International tennis tournament.